A hollow or natural passage under or into the earth, especially one with an opening to the surface.
A hall or corridor that is an entrance or exit or onto which several rooms open; passageway
(--- Chiefly Brit.) An underpass for pedestrians
Find another word for underpass. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for underpass, like: subway (British), bridge, cave, culvert, passage, tunnel, subway, overbridge, flyover, overpass and embankment.